Evidence map›Paper›PMID 26715742›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2016

CAMSAP3 orients the apical-to-basal polarity of microtubule arrays in epithelial cells.

Mika Toya, Saeko Kobayashi, Miwa Kawasaki, Go Shioi, Mari Kaneko, Takashi Ishiuchi, Kazuyo Misaki, Wenxiang Meng, Masatoshi Takeichi

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed
6.0field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

76 citing papers in PubMed, 149 citations in OpenAlex.

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  8. Tppp3 determines basal body positioning and identity of respiratory cilia via microtubule assembly and sphingolipid homeostasis.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  9. Microtubule Minus-End Binding Proteins in Cancer: Advances.Diagnostics (Basel, Switzerland) · 2025
    Review
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16 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Mika ToyaLaboratory for Cell Adhesion and Tissue Patterning, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan;
Saeko KobayashiLaboratory for Cell Adhesion and Tissue Patterning, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan;
Miwa KawasakiLaboratory for Cell Adhesion and Tissue Patterning, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan;
Go ShioiGenetic Engineering Team, RIKEN Center for Life Science Technologies, Kobe 650-0047, Japan;
Mari KanekoAnimal Resource Development Unit, RIKEN Center for Life Science Technologies, Kobe 650-0047, Japan;
Takashi IshiuchiLaboratory for Cell Adhesion and Tissue Patterning, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan;
Kazuyo MisakiUltrastructural Research Team, RIKEN Center for Life Science Technologies, Kobe 650-0047, Japan.
Wenxiang MengLaboratory for Cell Adhesion and Tissue Patterning, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan;
Masatoshi TakeichiLaboratory for Cell Adhesion and Tissue Patterning, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan; takeichi@cdb.riken.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Polarized epithelial cells exhibit a characteristic array of microtubules that are oriented along the apicobasal axis of the cells. The minus-ends of these microtubules face apically, and the plus-ends face toward the basal side. The mechanisms underlying this epithelial-specific microtubule assembly remain unresolved, however. Here, using mouse intestinal cells and human Caco-2 cells, we show that the microtubule minus-end binding protein CAMSAP3 (calmodulin-regulated-spectrin-associated protein 3) plays a pivotal role in orienting the apical-to-basal polarity of microtubules in epithelial cells. In these cells, CAMSAP3 accumulated at the apical cortices, and tethered the longitudinal microtubules to these sites. Camsap3 mutation or depletion resulted in a random orientation of these microtubules; concomitantly, the stereotypic positioning of the nucleus and Golgi apparatus was perturbed. In contrast, the integrity of the plasma membrane was hardly affected, although its structural stability was decreased. Further analysis revealed that the CC1 domain of CAMSAP3 is crucial for its apical localization, and that forced mislocalization of CAMSAP3 disturbs the epithelial architecture. These findings demonstrate that apically localized CAMSAP3 determines the proper orientation of microtubules, and in turn that of organelles, in mature mammalian epithelial cells.

Indexed as

Cell PolarityAmino Acid SequenceAnimalsBridged Bicyclo Compounds, HeterocyclicCaco-2 CellsEnterocytesEpithelial CellsGreen Fluorescent ProteinsHomozygoteHumansMice, Inbred C57BLMice, Mutant StrainsMicrotubule-Associated ProteinsMicrotubulesModels, BiologicalMolecular Sequence DataBridged Bicyclo Compounds, HeterocyclicCamsap3 protein, humanCamsap3 protein, mouseGreen Fluorescent Proteinslatrunculin AMicrotubule-Associated ProteinsNocodazoleThiazolidinesCAMSAPintestinal epithelial cellmicrotubule assemblymicrotubule minus-endNezha

Identifiers

PMID26715742
PMCPMC4720291
OpenAlexW2198451860

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.